Item Type: Wheel LikePractice Putting BallMaterial: PlasticWeight: Approx. 91g/ 3.2oz .wang-edit-text{ font-family:Arial important; } .wang-edit-text table { border-top: 1px solid 000; border-left: 1px solid 000; } .wang-edit-text table td, .wang-edit-text table th { border-bottom: 1px solid 000; border-right: 1px solid 000; padding: 3px 5px; } .wang-edit-text table th { text-align: center; } 1Adjustable Weight: There are 6 gravity rings inside, which can be used to determine whether the push rod strength is appropriate by increasing or decreasing the rings. 2High Stability: The tire shape design of the ball effectively improves the stability of push shot so that it is stable and durable. 3Compact and Portable: This practice putting ball is simple and practical, convenient storage, can be used for putter practice anytime and anywhere. 4Usage: Place the ball on a horizontal putting blanket or green, use a push shot and observe the track of the ball. Then by increasing or reducing the ring to observe the trajectory and dynamics of the ball to judge whether the strength of the putter is appropriate. If the ball is tilted to one side, it is recommended to use four weights (light to heavy) every 10 reps for a set. 5Perfect Gift: This putting ball is designed for beginners and pros to enhance their skills, it is great to improve the accuracy of your putting on the green and create your confidence.